Push to Talk (PTT) is a means of achieving two way communications by utilizing a cellular device on existing GSM cellular network infrastructure.
Reliable Quality two way radios.
We have KST, Kenwood, Motorola & Hytera, DMR.
UHF or VHF range.
Analog or Digital portable/mobile/repeaters
A DC-to-DC converter is an electronic circuit or electromagnetically device that converts a source of direct current (DC) from one voltage level to another. It is a type of electric power converter.